Ivan Penkov was born on March 10, 1897, in Kazanlak, Bulgaria.
Nikolay Penkov died on December 21, 2009, in Moscow, Russia.
Petar Penkov died on June 4, 1974, in Sofia, Bulgaria.
Stanislav Penkov's birth name is Stanislav Aleksandrovitch Penkov.
Georgi Penkov goes by Dzhoni.
Stanislav Penkov was born on May 8, 1937.
Georgi Penkov was born on November 26, 1933, in Sofia, Bulgaria.
Petar Penkov was born on June 28, 1934, in Burgas, Bulgaria.
Nikolay Penkov was born on January 4, 1936, in Oryol Oblast, Russian SFSR, USSR [now Russia].
Ivan Ryadchenko died in 1999.
Ivan Doncevic died in 1982.
Ivan Bukovcan died in 1975.